Abstract
Abstract Rock samples (Paintbrush Tuff from the Nevada Test Site) were subjected to high strain rate loading using split-Hopkinson pressure bars. Both competent and granular samples were loaded in compression to 600 MPa with strain rates to 4000 s−1. Samples of the competent tuff were tested both parallel and perpendicular to the bedding plane orientation. Bedding plane orientation was found to have very little effect on the response to dynamic loading. The granular samples were tested in three different conditions, dry, 59% saturated, and 98% saturated. Adding water to the granular samples permitted much higher stresses to be supported by the material.
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